TX Pickup / Door Delivery USA Stock Docan Apex S3 Stackable DIY 51.2V LiFePO4 Battery Box Kit with JK PB2A16S20P V19 200A BMS, 4.3-inch Touchscreen, M8 Terminals and 200A DC Breaker

Apex S3 Horizontal DIY 51.2V Battery Box Kit for 16 LiFePO4 Cells

Short answer: This USA-stock Apex S3 kit is a horizontal, stackable enclosure for building a 16S 51.2V LiFePO4 battery. It includes the metal case with a preinstalled JK PB2A16S20P V19 200A BMS, 2A active balancing, 4.3-inch touchscreen, internal wiring, M8 output terminals and a 200A DC circuit breaker. Battery cells are not included.

Quick check before ordering: Confirm the dimensions and terminal layout of your 16 cells, your inverter brand/model, and whether you need Texas pickup or inland US delivery. Contact Jenny if you want us to check the fit and communication plan before payment.

What Is This USA-Stock DIY Battery Box Designed For?

The Apex S3 is intended for experienced DIY builders and qualified installers who want a compact horizontal enclosure for a home solar, backup-power or off-grid energy-storage project. The stackable format is useful when floor space and clean system layout matter.

• 16S, 51.2V nominal LiFePO4 battery projects
• Home solar energy storage and backup power
• Off-grid workshops, farms and stationary ESS projects
• Single-pack systems or carefully engineered multi-pack installations

This is a component kit, not a finished battery. Cell selection, cell matching, torque settings, insulation, system protection, inverter settings and final commissioning remain the installer’s responsibility.

Confirmed Technical Specifications

Cell-fit note: Capacity alone does not confirm compatibility. Cell length, width, height, terminal spacing, terminal type and busbar alignment must match the current box layout.

JK PB2A16S20P V19 200A BMS, 2A Active Balancing and Communication

The current US configuration uses the JK PB2A16S20P V19 200A BMS. The BMS, 4.3-inch touchscreen, DC breaker and internal wiring are preinstalled to reduce repetitive assembly work. Bluetooth supports local monitoring through the JK app, while CAN, RS485 and RS232 are available for system communication.

Communication compatibility depends on the inverter model, protocol, firmware and cable pinout. Send the inverter brand and exact model before ordering so the protocol plan can be checked. A listed communication port does not guarantee plug-and-play compatibility with every inverter.

What Is Included and What Is Not Included?

Included in the S3 Box Kit

• Horizontal stackable metal enclosure and cover set
• Preinstalled JK PB2A16S20P V19 200A BMS
• Preinstalled 4.3-inch touchscreen and related communication wiring
• Preinstalled 200A DC circuit breaker
• M8 positive and negative output terminals
• Cell connection boards, busbars, internal cables, insulation sheets, EVA separators and fastening hardware supplied with the current kit

Not Included

• 16 LiFePO4 battery cells
• Inverter, charger, rack or complete solar system
• Optional parallel cables or fire-suppression accessory unless selected in the product options

Can Multiple Apex S3 Battery Boxes Be Connected in Parallel?

Up to 15 completed battery packs may be used in parallel when the batteries have matched cell type and capacity, compatible BMS firmware and settings, coordinated communication, correctly sized equal-length cables, suitable busbars and protection, and a system design approved for the intended current. Do not mix unmatched batteries or assume that physical stacking alone makes a parallel system ready to operate.

Assembly and Safety Planning

• Use matched cells with consistent state of charge before series connection.
• Confirm cell orientation, polarity and busbar alignment before tightening.
• Use the cell manufacturer’s specified terminal torque; do not use a generic torque value.
• Keep insulation barriers in place and protect tools from accidental short circuits.
• Configure charge, discharge and temperature limits for the actual cells used.
• Have a qualified installer review grounding, cable sizing, overcurrent protection and inverter settings before commissioning.

Texas Pickup and Inland USA Delivery

This listing is supplied from the Texas warehouse. Choose the applicable pickup or inland USA delivery option shown on the product page. Delivery eligibility and final shipping arrangements depend on the destination address. For islands, remote areas or special access requirements, confirm the address before payment.

Choose the Right Docan DIY Battery Format

Choose this S3 model when you want a horizontal, stackable enclosure. For a floor-standing layout, compare the USA-stock Apex Vertical V3 DIY battery box. If you do not want to assemble cells, browse complete LiFePO4 battery packs or view current USA-stock products.

Frequently Asked Questions

Are battery cells included with this Apex S3 kit?

No. This listing is for the enclosure kit and its installed control components. Sixteen LiFePO4 cells must be purchased separately.

Which LiFePO4 cells fit the S3 battery box?

The box is intended for 16pcs 3.2V 280-350Ah prismatic LiFePO4 cells. Common examples include 280Ah, 304Ah, 314Ah and 330Ah cells, but the complete dimensions and terminal layout must be checked before ordering.

What BMS is installed?

The current US configuration includes a preinstalled JK PB2A16S20P V19 200A BMS with 2A active balancing.

Does the kit include a display?

Yes. A 4.3-inch touchscreen is preinstalled.

Which communication ports are available?

The current configuration supports CAN, RS485, RS232 and Bluetooth. Inverter communication still depends on the exact protocol, firmware and cable pinout.

Does the S3 kit include a fuse?

No. The confirmed protection device in this kit is a 200A DC circuit breaker; a fuse is not included.

Are the BMS, screen and breaker preinstalled?

Yes. The BMS, touchscreen, breaker and main internal wiring are preinstalled. The buyer still needs to install and connect the cells and complete all final checks.

Can I connect up to 15 completed packs in parallel?

Up to 15 may be possible only with matched batteries, coordinated BMS settings and communication, equal-length correctly sized cables, suitable protection and a properly engineered system.

What are the product and package dimensions?

The product measures 440 x 820 x 270 mm. The confirmed package size is 830 x 510 x 330 mm.

How much does the kit weigh?

Net weight is 27 kg and packaged weight is 31 kg.

Can this BMS communicate with my inverter?

It may communicate with many common inverter systems, but compatibility is model- and protocol-specific. Provide the inverter brand and exact model for checking before ordering.

Can I pick it up in Texas?

Use the pickup option displayed on this USA-stock product page. Inland USA delivery is also available according to the shipping option and destination eligibility shown on the page.